With Spring Boot 3 some classes were deprecated and also the Keycloak adapter and the admin client stopped working in an application I am maintaining. In https://blog.coffeebeans.at/archives/1904 I already showed how to instantiate a WebClient which is the new way Spring wants us to call external APIs – not considering external libs like feign now. …
RestTemplate is dead and everybody should use WebClient now. That’s what you find everywhere so I had a look how to configure an instance of WebClient properly: This defines a bean genericWebClient with Spring Boot configured Jackson ObjectMapper instance. Here is also the code for the WebClientLoggerBuilder: This simply logs method, path and headers of …
Docker wants to bill companies for Docker Desktop. In my opinion it’s not worth it because there are multiple options how to replace it without the need to really change habits. Here the statement taken from Docker FAQ regarding payment for Docker Desktop: Who’s required to pay for Docker Desktop? Docker Desktop requires a paid, …
The following time code generation is based on real time clocks synced with ntp on mac or linux computers using UTC time. Make sure your machine has an internal clock source otherwise the time drift will be too big. This approach is a very cheap way to get proper time code into cameras. If your …
Simply delete the folder <user>/Library/Application Support/REAPER.
As it was quite hard to find a proper command to replace all empty lines within a text file – including empty lines at the start and end – I wanted to take down the following command which worked for me on macOS:
While using Java and Kotlin with Spring Boot the following exception occurs and it’s quite hard to find how to fix it. The simple solution is to add the following top level config in your gradle file:
Following the documentation using arkade was (as stated in the docs) the fastest and easiest way to get a working local installation running. There are numerous outdated tutorials about how to run OpenFaaS locally but none of really worked in my envrionment. I am using a MacBook M1 Max with docker driver. I have docker …
Local OpenFaaS environment with minikube and docker driver Read More »
If you don’t want to use different syntax on your mac with sed command then it can be easily replaced with GNU sed by installing it via This installs the program as gsed which is also not handy if you don’t want to write different scripts for Linux and macOS. If you want to get …
When upgrading to the latest tools and libraries in a Spring Boot application with OpenAPI code generator in place the OpenAPI Kotlin generator introduced jakarta.annotation:jakarta.annotation-api. But with this in place the application refused to start with something like org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat…Caused by: java.lang.IllegalStateException: …
java.lang.ClassNotFoundException: javax.annotation.PostConstruct Read More »